Volume set up Ink effect | Houdini FX

Simulation

Custome velocity

Volumevop - custome velocity

Set up Volume Scene

•     Scale Temperature          ~ Kecepatan asap jatuh
•     Activation                       ~ $FF <20,Asap akan berhenti mensimulasi di frame 20
•     Scale Source Volume      ~ Ketebalan Asap
•     Temperature Diffusion   ~ Semakin kecil, semakin lama asap bertahan
•     Viscosity                         ~ Mempertahankan bentuk semula asap

Set up custome velocity

•     Box - Volume - Volumevop -
•     Rank change to Vector give it name "vel"
•     Uniform sampling "50"

Volumevop

•     Volumevopglobal - turbulance noise - parameter
•     (P to Position)
•     Name "vel"
•     Label "vel"
•     Type "Vector"
•     Check Use input value if parameter
•     Export When Input is Connected
•     Turbulance Noise "3DVectore"
•     Export all parameters from turbulance noise

Set up visualize for custome velocity

•     Grid - Volume Trail
•     Grid to XY Plane
•     Row "50"
•     Columns "50"

Turbulance Noise setting custome_velocity

•     Noise type "Alligator Noise"
•     Frequency all "0,8"

to control direction of velocity from noise

•     Name "dir" - Label "Direction"
•     dir - multiply - add - vel       
•     turbulancce - multiply - add

Writen by :Bayu Rahmawan based on cmivfx ink tutorial